Modification of formaldehyde-melamine-sodium bisulfite copolymer foam and its application as effective sorbents for clean up of oil spills

Template‐assisted hydrophobic porous silica membrane: A purifier sieve for organic solvents

“…The separation efficiency was calculated by the passage of 30 mL of various solvents through these membranes under gravity and their comparison with the passage of distilled water (Figure ). The absorption behavior was monitored with toluene as an organic solvent tinted with Sudan Blue‐III dye . The PEGDA‐derived membrane exhibited the highest contact angle among the membranes; hence, it showed the best efficiency among all of the organic solvents, in particular, those with CHCl 3 ; this resulted in 100% passage within 30 min.…”

“…The absorption behavior was monitored with toluene as an organic solvent tinted with Sudan Blue-III dye. 25,26 The PEGDA-derived membrane exhibited the highest contact angle among the membranes; hence, it showed the best efficiency among all of the organic solvents, in particular, those with CHCl 3 ; this resulted in 100% passage within 30 min. The passages of toluene and n-hexane were also checked and were found to be faster than in both the HEA-PEGDA-and HEMA-PEGDA-derived membranes, as shown in Figure 6, whereas no water passage was observed, even after 50 min.…”

Hydrophobic surface modification of FMSS and its application as effective sorbents for oil spill clean‐ups and recovery

“…The trapezoidal rule, as expressed by Supporting Information Eq. S1, was employed to obtain the area under the absorbance vs. wavelength curve where is the percentage oil removed, is the density of the test oil (g/mL), and is the volume of oil added to the beaker.…”

“…[2][3][4][5][6] Among these techniques, the use of three-dimensional porous absorbent is particularly attractive and promising because of its potential to absorb and hold the oil pollutants into its matrix structure, making subsequent recovery of the oil from its semisolid sorbent phase viable. [7][8][9][10][11][12] Various sorbent materials have been studied, including biodegradable organic porous sorbent materials 2-5,7-10 (i.e., vegetable fibers, cotton grass fiber, cotton grass mats, kapok fibers, rice hull, bagasses, straws, peats, and empty palm fruit bunches) and inorganic porous sorbent materials [13][14][15][16][17][18][19] (i.e., cellulosic aerogels, carbon nanotubes [CNT], organo-clays, graphite, and calcium fly ashes). However, they are often unsatisfactory for practical applications due to low sorption capacity, poor recyclability, environmental unfriendliness, complex fabrication processes, and lack of selective sorption properties.…”

Macroporous 3D MXene architecture for solar-driven interfacial water evaporation

“…Carbonized melamine foam (CMF) as a framework to fabricate various functional hybrid foams, with an interconnected 3D network and a highly porous structure, has been used in the fields of supercapacitors, 17 catalysts 18,19 and oil/water separation 20 due to its excellent hydrophilicity, low thermal conductivity, compressible property, low cost and scalable synthesis. 21 Recently, a new family of 2D materials named MXenes with excellent electromagnetic wave absorption characteristics, excellent mechanical properties and hydrophilic surface, has received increasing attention for sunlight harvesting. [22][23][24] MXenes (with the chemical formula of M nþ1 X n T x , where M is an early transition metal, X represents C and/or N and T x refers to surface functional groups such as -O, -F, and n ¼ 1, 2 or 3) are produced through selectively etching out the A-layers from M nþ1 AX n phases using HF or HCl/LiF mixture as the etching solution, where A stands for a group of IIIA or IVA elements.…”